Fresh air module and air conditioner

Abstract

The invention relates to the technical field of air conditioners, in particular to a fresh air module and an air conditioner, and the fresh air module comprises a fan assembly and a shell. An air inlet cavity is formed in the shell, and a first air inlet communicating with the air inlet cavity is formed in the shell; the fan assembly is connected with the shell, a second air inlet and an air outlet are formed in the fan assembly, and the second air inlet communicates with the air inlet cavity; a bypass cavity is defined by the shell and the fan assembly, and a first backflow inlet and a first backflow outlet are formed in the bypass cavity; the first backflow inlet communicates with the air outlet, and the first backflow outlet communicates with the air inlet cavity. The fan assembly generates suction force to suck the fresh air flow into the air inlet cavity through the first air inlet and then exhaust the fresh air flow through the air outlet, and part of the fresh air flow exhausted from the air outlet can flow back into the air inlet cavity again through the bypass cavity, so that the total air inlet amount entering the fan assembly is increased, surge of the wind wheel is avoided, and user experience is optimized.

Description

Fresh air module and air conditioner Technical Field

[0001] This application relates to the field of air conditioner technology, and more particularly to a fresh air module and an air conditioner. Background Technology

[0002] The main function of air conditioners such as air intake fans and ducted air conditioners is to introduce fresh outdoor air, filter it, regulate its temperature and humidity, and then send it indoors, while expelling stale indoor air to maintain indoor air quality and comfort.

[0003] In related technologies, filters are usually installed at the fresh air inlet of air conditioners to block dust or other pollutants. As the usage time increases, the accumulation of pollutants leads to increased airflow resistance, making the impeller prone to entering the surge zone under low flow conditions, causing equipment vibration and noise, which affects the user experience. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this disclosure provides a fresh air module and an air conditioner that can improve the airflow of the duct, avoid impeller surge and noise generation, and optimize the user experience.

[0005] According to embodiments of this disclosure, a fresh air module and an air conditioner are provided.

[0006] In a first aspect, this disclosure provides a fresh air module, including a fan assembly and a housing;

[0007] The housing is provided with an air inlet cavity, and the housing is provided with a first air inlet that communicates with the air inlet cavity;

[0008] The fan assembly is connected to the housing, and the fan assembly has a second air inlet and an air outlet, with the second air inlet communicating with the air inlet cavity;

[0009] The housing and the fan assembly form a bypass cavity, and the bypass cavity has a first return inlet and a first return outlet;

[0010] The first return inlet is connected to the air outlet, and the first return outlet is connected to the air inlet cavity.

[0011] In some embodiments of this disclosure, the wind turbine assembly includes a volute and a rotor;

[0012] The volute is provided with an air outlet channel, the second air inlet is provided in the volute, and the impeller is provided inside the volute to drive the fresh air flow of the air inlet chamber into the volute through the second air inlet and out through the air outlet channel;

[0013] The air outlet is formed at the port of the air outlet channel away from the impeller, and the first return inlet is opened on the side wall of the air outlet channel.

[0014] In some embodiments of this disclosure, the housing includes a first outer shell and a second outer shell, the first outer shell being connected to the volute, and the air inlet cavity being disposed within the first outer shell;

[0015] The second outer shell is connected to the first outer shell, and a portion of the second outer shell extends toward the volute to connect with the outer side wall of the volute. The second outer shell, the first outer shell, and the outer side wall of the volute together form the bypass cavity.

[0016] The first reflux outlet is located on the side wall of the first housing.

[0017] In some embodiments of this disclosure, a bypass conduit is also included, one end of which is connected to the housing and the other end of which is connected to the volute.

[0018] The bypass pipe has a second return inlet and a second return outlet. The second return inlet is connected to the air outlet channel, and the second return outlet is connected to the air inlet chamber.

[0019] In some embodiments of this disclosure, the bypass pipe penetrates the first inner wall of the air outlet channel, and the first return inlet is located on the second inner wall of the air outlet channel;

[0020] There is an angle between the first inner wall and the second inner wall;

[0021] Alternatively, the first inner wall is parallel to the second inner wall.

[0022] In some embodiments of this disclosure, the number of bypass pipes is set to multiple; and / or, the bypass pipes are made of flexible material.

[0023] In some embodiments of this disclosure, the sum of the flow areas of the first return inlet and the second return inlet is set to A1, and the flow area of ​​the air outlet is set to A2; wherein:

[0024] A1 / A2≤0.2.

[0025] In some embodiments of this disclosure, a support and a filter are also included;

[0026] The support member is connected to the housing, and a support cavity is formed inside the support member. The support cavity is connected to the air inlet cavity, and the port of the support cavity forms the first air inlet.

[0027] The filter element is disposed within the support cavity.

[0028] In some embodiments of this disclosure, the housing is further provided with a disassembly port communicating with the support cavity, and the filter element passes through the disassembly port to be inserted into the support cavity.

[0029] Secondly, this disclosure provides an air conditioner, including a device body and a fresh air module as described above;

[0030] The device body is connected to the fresh air module.

[0031] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0032] 1. The fan assembly generates suction force to draw fresh air into the air inlet cavity through the first air inlet, and then discharges it through the air outlet. A bypass cavity is formed by the housing and the fan assembly. The first return inlet of the bypass cavity is connected to the air outlet, and the first return outlet is connected to the air inlet cavity. Under the pressure difference between the air outlet and the air inlet, a portion of the fresh air discharged at the air outlet will flow back into the air inlet cavity through the bypass cavity, actively supplementing the air volume of the air inlet cavity, thereby increasing the total air volume entering the fan assembly, avoiding impeller surge, and optimizing the user experience.

[0033] 2. The bypass cavity is formed by the shell and the fan assembly. It has a compact structure and high integration. It not only forms an auxiliary airflow circulation path to improve the airflow efficiency of the overall air duct, but also simplifies the structure of the fresh air module and facilitates production and assembly. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0035] Figure 1 is a structural schematic diagram of a fresh air module according to some embodiments of the present disclosure;

[0036] Figure 2 is a schematic diagram of the internal structure of the fresh air module in Figure 1;

[0037] Figure 3 is an exploded structural diagram of a fresh air module according to some embodiments of the present disclosure;

[0038] Figure 4 is a schematic diagram of the internal structure of an air conditioner according to some embodiments of the present disclosure;

[0039] Figure 5 is a schematic diagram of the internal structure of the air outlet and bypass cavity according to some embodiments of the present disclosure.

[0040] Explanation of reference numerals in the attached figures:

[0041] 10. Equipment body; 100. Fan assembly; 101. Second air inlet; 102. Air outlet; 103. Air outlet duct; 1031. First inner wall; 1032. Second inner wall; 110. Volute; 120. Impeller; 200. Housing; 201. Air inlet cavity; 202. First air inlet; 203. Disassembly / assembly port; 210. First outer shell; 220. Second outer shell; 300. Bypass cavity; 301. First return inlet; 302. First return outlet; 400. Bypass pipe; 401. Second return inlet; 402. Second return outlet; 410. First bypass pipe; 420. Second bypass pipe; 500. Support component; 501. Support cavity; 600. Filter element. Detailed Implementation

[0042] Some embodiments of this disclosure will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. Various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will become apparent upon understanding this disclosure. For example, the order of operations described herein is merely illustrative and is not limited to those orders set forth herein, but can be changed as will become apparent upon understanding this disclosure, except for operations that must be performed in a particular order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0043] The embodiments described in the following examples of this disclosure are not representative of all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0044] As mentioned in the background technology, air conditioners such as fresh air wheels and ducted air conditioners are important air conditioners in modern homes and offices. Their core function is to introduce fresh outdoor air, filter it, regulate its temperature and humidity, and then send it indoors, while expelling stale indoor air to maintain indoor air quality and comfort.

[0045] In practical applications, fresh air systems typically need to be integrated with building structures such as ducts and rain caps, and filters are installed at the fresh air inlet to block pollutants such as dust and pollen. However, while these technologies improve air cleanliness, they also significantly increase airflow resistance. Especially with prolonged use, dust and pollen accumulate at the filter, reducing its ventilation capacity. This further increases airflow resistance due to dust accumulation, making the impeller prone to entering a surge zone under low-flow conditions, producing a "breathing" noise, and potentially causing equipment vibration due to localized airflow disturbances, thus affecting the user experience.

[0046] To this end, this disclosure provides a fresh air module and an air conditioner, wherein the fresh air module includes a fan assembly and a housing. The housing has an air inlet cavity, and a first air inlet communicating with the air inlet cavity is provided on the housing. The fan assembly is connected to the housing, and the fan assembly has a second air inlet and an air outlet, the second air inlet communicating with the air inlet cavity. The housing and the fan assembly form a bypass cavity, the bypass cavity having a first return inlet and a first return outlet; the first return inlet communicating with the air outlet, and the first return outlet communicating with the air inlet cavity.

[0047] The fan assembly generates suction to draw fresh air into the air inlet cavity through the first air inlet, and then discharges it through the air outlet. A bypass cavity is formed by the housing and the fan assembly. The first return inlet of the bypass cavity is connected to the air outlet, and the first return outlet is connected to the air inlet cavity. Under the pressure difference between the air outlet and the air inlet, a portion of the fresh air discharged at the air outlet will flow back into the air inlet cavity through the bypass cavity, actively supplementing the air volume of the air inlet cavity, thereby increasing the total air volume entering the fan assembly, avoiding impeller surge, and optimizing the user experience.

[0048] It should be noted that Figures 1 to 4 show simplified schematic diagrams of the components in the fresh air module and air conditioner. The specific structure of the other components in the fresh air module and air conditioner is not limited to the examples shown in Figures 1 to 4.

[0049] The present disclosure will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0050] Referring to Figures 1 and 2, this embodiment of the present disclosure provides a fresh air module, which includes a fan assembly 100 and a housing 200. An air inlet cavity 201 is provided inside the housing 200, and a first air inlet 202 communicating with the air inlet cavity 201 is provided on the housing 200. The first air inlet 202 communicates with the external environment, for example, the first air inlet 202 is connected to the outdoor environment.

[0051] The fan assembly 100 is connected to the housing 200. The fan assembly 100 has a second air inlet 101 and an air outlet 102. The second air inlet 101 is connected to the air inlet cavity 201. The air outlet 102 is connected to the target environment, for example, the air outlet 102 is connected to the indoor environment.

[0052] The housing 200 and the fan assembly 100 are arranged to form a bypass cavity 300. The bypass cavity 300 has a first return inlet 301 and a first return outlet 302. The first return inlet 301 is connected to the air outlet 102, and the first return outlet 302 is connected to the air inlet cavity 201.

[0053] In this embodiment of the present disclosure, the fan assembly 100 can generate suction force to draw fresh air from the outdoor environment into the air inlet chamber 201 through the first air inlet 202. Then, the fresh air enters the fan assembly 100 through the second air inlet 101 and is discharged towards the indoor environment through the air outlet 102, so that the fresh air enters the indoor environment.

[0054] During the aforementioned fresh air flow process, a bypass cavity 300 is formed by setting the housing 200 and the fan assembly 100. The first return inlet 301 of the bypass cavity 300 is connected to the air outlet 102, and the first return outlet 302 is connected to the air inlet cavity 201. Under the pressure difference between the air outlet 102 and the air inlet, a portion of the fresh air flow discharged at the air outlet 102 will flow back into the air inlet cavity 201 through the bypass cavity 300, actively supplementing the air volume of the air inlet cavity 201, thereby increasing the total air volume entering the fan assembly 100, avoiding the surge of the impeller 120, and optimizing the user experience.

[0055] This is because the fan assembly 100 generates suction, creating negative pressure at the first air inlet 202 and the air inlet cavity 201, drawing fresh air from the external environment into the air inlet cavity 201. At the air outlet 102, due to the blowing force of the fan assembly 100, the air pressure at the air outlet 102 is higher than that at the first air inlet 202. At this point, by connecting the first return inlet 301 to the air outlet 102 and the first return outlet 302 to the air inlet cavity 201, the air pressure at the first return inlet 301 will be higher than that at the first return outlet 302. Consequently, some of the fresh airflow at the first return inlet 301 will flow towards the first return outlet 302 under the influence of the pressure difference, thus supplementing the airflow in the air inlet cavity 201.

[0056] By setting up a bypass cavity 300, the airflow obstruction in the duct caused by excessive air intake resistance is broken, forming an auxiliary airflow circulation path outside the main circulation path of the fan assembly 100, thereby improving the overall airflow efficiency of the duct; at the same time, it eliminates the cause of surge, directly reduces the abnormal noise caused by surge, and optimizes the acoustic performance of the equipment.

[0057] In addition, the bypass cavity 300 is formed by the housing 200 and the fan assembly 100. It has a compact structure and high integration. It not only forms an auxiliary airflow circulation path to improve the airflow efficiency of the overall air duct, but also simplifies the structure of the fresh air module and facilitates production and assembly.

[0058] In some embodiments of this disclosure, the fan assembly 100 includes a volute 110 and a fan wheel 120 disposed within the volute 110. The volute 110 is provided with an air outlet channel 103. A second air inlet 101 is formed on the air inlet side of the fan wheel 120, and the air outlet side of the fan wheel 120 communicates with the air outlet channel 103. An air outlet 102 is formed at the port of the air outlet channel 103 away from the fan wheel 120, and a first return inlet 301 is formed on the side wall of the air outlet channel 103. The fan wheel 120 is disposed within the volute 110 to drive the fresh air flow from the air inlet chamber 201 into the volute 110 through the second air inlet 101 and out through the air outlet channel 103.

[0059] The first return inlet 301 is located on the side wall of the air outlet duct 103, which allows air to be drawn from the pressure stabilization zone within the air outlet duct 103. This avoids the interference of airflow turbulence and pressure fluctuations at the air outlet 102 on the return airflow in the bypass cavity 300, ensuring that the airflow and pressure returning to the air inlet cavity 201 are stable and that the air inlet cavity 201 is continuously and reliably supplied with air.

[0060] By reducing airflow resistance and vortex generation during the 300 bypass cavity recirculation process, the airflow volume and efficiency of the main outlet are not affected, while the recirculation airflow is efficiently obtained, further improving the overall flowability of the duct.

[0061] In some specific embodiments of this disclosure, referring to Figures 2 and 3, the housing 200 includes a first outer shell 210 and a second outer shell 220. An air inlet cavity 201 is disposed inside the first outer shell 210. The first outer shell 210 is connected to the volute 110. The second outer shell 220 is connected to the first outer shell 210, and a portion of the second outer shell 220 extends toward the volute 110 to connect with the outer side wall of the volute 110. The second outer shell 220, the first outer shell 210, and the outer side wall of the volute 110 together form a bypass cavity 300. A first return outlet 302 is opened on the side wall of the first outer shell 210.

[0062] Specifically, both the first outer casing 210 and the second outer casing 220 are box-shaped, which facilitates the formation of the air conditioner's exterior surface and improves its neatness and aesthetics. The second outer casing 220 is connected to the first outer casing 210, or it can be understood that the second outer casing 220 and the first outer casing 210 are a single piece. An air inlet cavity 201 is formed inside the first outer casing 210. By opening a first air inlet 202 on the first outer casing 210, the orientation of the first air inlet 202 can be changed, improving the adaptability of the fresh air module.

[0063] In addition, the air inlet cavity 201 of the first outer shell 210 has a certain stabilizing effect on the fresh air flow, ensuring that the fresh air flow, air volume and flow rate entering the fan assembly 100 are stable, further avoiding vibration or turbulence in the fan assembly 100 and improving the user experience.

[0064] By setting up the first outer shell 210 and the second outer shell 220, the mutual influence between the airflow in the bypass cavity 300 and the airflow in the air inlet cavity 201 can be reduced. For example, the airflow impact caused by different flow velocities and the increase in airflow resistance can be mitigated. The bypass cavity 300 is formed by the second outer shell 220, the first outer shell 210 and the outer wall of the volute 110, which can make full use of the idle space inside the fresh air module, making the structure more compact and reducing the overall volume.

[0065] Referring to Figure 3, the first outer shell 210 is connected to the volute 110, preventing vibrations generated during the operation of the impeller 120 from being directly transmitted to the outer shell 200, thus improving the user experience. The second outer shell 220 is connected to the first outer shell 210. Additionally, a portion of the second outer shell 220 extends towards the volute 110 and connects to the outer wall of the volute 110, increasing the number of connection points. This secures the outer shell 200 to the fan assembly 100, improves the overall structural rigidity of the fresh air module, further reduces operating noise, and prevents airflow turbulence caused by structural deformation of the bypass cavity 300.

[0066] In some embodiments of this disclosure, continuing to refer to Figures 2 and 3, the fresh air module further includes a bypass pipe 400, one end of which is connected to the housing 200 and the other end of which is connected to the volute 110; the bypass pipe 400 has a second return inlet 401 and a second return outlet 402, the second return inlet 401 is connected to the air outlet channel 103 and the second return outlet 402 is connected to the air inlet chamber 201.

[0067] In the above configuration, an independent bypass duct 400 is used to achieve airflow recirculation, which, together with the bypass cavity 300, assists in the recirculation and actively supplements the airflow to the air inlet cavity 201, further increasing the flow rate and circulation of fresh air within the air inlet cavity 201. The bypass duct 400 is adaptable to fresh air modules with different internal spatial layouts and assembly processes, thus improving versatility. Here, the end of the bypass duct 400 can be connected to the housing 200 and the volute 110 via a flange or welding. This disclosure does not limit the connection method between the bypass duct 400 and the housing 200 and the volute 110. Alternatively, the bypass duct 400 can be detachably connected to the housing 200 and the volute 110. If blockages or damage occur, the bypass duct 400 can be disassembled and replaced separately without disassembling the entire fresh air module structure, reducing the difficulty and cost of later maintenance.

[0068] Specifically, the bypass duct 400 is connected to the first outer casing 210. After the second return inlet 401 draws air, the airflow is directly introduced into the air inlet cavity 201 through the second return outlet 402, shortening the air supply path, reducing wind resistance, and improving the airflow within the bypass duct 400.

[0069] In some specific embodiments of this disclosure, referring to Figures 3 and 5, the bypass pipe 400 passes through the first inner wall 1031 of the air outlet channel 103, and the first return inlet 301 is opened on the second inner wall 1032 of the air outlet channel 103; the first inner wall 1031 and the second inner wall 1032 have an angle; or, the first inner wall 1031 and the second inner wall 1032 are parallel.

[0070] By setting the first inner wall 1031 and the second inner wall 1032 to have an angle or be parallel, reasonable air intake can be achieved at different locations in the air outlet duct 103. This allows the air intake areas of the first return inlet 301 and the second return inlet 401 to be independent and non-interfering with each other, avoiding problems such as airflow competition and turbulence between the first return inlet 301 and the second return inlet 401, and ensuring stable return flow between the first return inlet 301 and the second return inlet 401.

[0071] Specifically, as shown in Figure 5, multiple bypass pipes 400 are provided, including a first bypass pipe 410 and a second bypass pipe 420. The first bypass pipe 410 penetrates the top wall of the air outlet duct 103, and the second bypass pipe 420 penetrates the right side wall of the air outlet duct 103. The first return inlet 301 is located on the left side wall of the air outlet duct 103. This ensures that the air intake of the multiple bypass pipes 400 and the air intake of the bypass cavity 300 do not interfere with each other. While ensuring stable air intake, the increased number of bypass pipes 400 further increases the flow rate of the actively replenished fresh air, further preventing the impeller 120 from experiencing surge and generating noise.

[0072] In this embodiment, the bypass pipe 400 is made of a flexible material. For example, the bypass pipe 400 is made of flexible plastic or rubber. This allows it to adapt to the complex internal space of the air conditioner, making full use of space to complete the arrangement of the bypass pipe 400 and further improving the structural compactness.

[0073] The sum of the flow areas of the first return inlet 301 and the second return inlet 401 is set as A1, and the flow area of ​​the air outlet 102 is set as A2; wherein: A1 / A2≤0.2.

[0074] By limiting A1 / A2≤0.2, the total flow area of ​​the return inlet is limited, allowing only a small portion of the fresh airflow to return and replenish the air. This ensures that sufficient fresh airflow is supplied to the air inlet cavity 201 to prevent the impeller 120 from entering the surge zone, while also ensuring that the vast majority of the fresh airflow is delivered to the target environment from the air outlet 102, maintaining the indoor fresh air supply and balancing the equipment's operational stability with the indoor air quality requirements.

[0075] Specifically, setting A1 / A2 to 0.2 prevents excessive return flow due to an overly large return inlet area, avoids excessive diversion of the main outlet airflow which could cause the impeller 120's operating point to shift and reduce operating efficiency, and ensures that the impeller 120 remains within a highly efficient and stable operating range, further improving duct flow efficiency. Simultaneously, it reduces eddies and turbulence within the outlet duct 103, minimizing airflow resistance and energy loss.

[0076] In some embodiments of this disclosure, as shown with reference to Figures 2 and 3, the fresh air module further includes a support 500 and a filter 600.

[0077] The support member 500 is connected to the housing 200. The support member 500 has a support cavity 501, which is connected to the air inlet cavity 201. The port of the support cavity 501 forms the first air inlet 202. The filter element 600 is disposed in the support cavity 501.

[0078] The support component 500 is a sheet metal part, which can enhance the structural strength and make the filter component 600 more stable. The support cavity 501 provides a regular installation space and rigid support for the filter component 600, preventing the filter component 600 from shifting or falling off under the impact of airflow.

[0079] The support cavity 501 and the filter element 600 form a filter unit. The outdoor fresh air needs to be filtered by the filter element 600 before entering the air inlet cavity 201. This effectively blocks dust and pollutants, reduces the accumulation of pollutants in the impeller 120, and improves the cleanliness of the fresh air entering the room.

[0080] Filter element 600 can be a High-efficiency Particulate Filter (HEPA filter), which can further improve the cleanliness of the fresh air flow. Further, filter element 600 may also include a metal filter, which has good structural strength and prevents deformation of filter element 600 caused by impact from large external particles.

[0081] To facilitate timely replacement or maintenance of the filter element 600, the housing 200 is also provided with a disassembly / removal port 203 that communicates with the support cavity 501. The filter element 600 passes through the disassembly / removal port 203 and is inserted into the support cavity 501. Specifically, the disassembly / removal port 203 is located on the top of the first housing 210, enabling quick plug-and-play disassembly / removal of the filter element 600, reducing the difficulty of cleaning and replacing the filter element 600, and improving the ease of maintenance of the filter element 600.

[0082] In this embodiment of the disclosure, referring to FIG4, an air conditioner is also provided, including a device body 10 and a fresh air module as described above; the device body 10 is connected to the fresh air module. As shown in FIG4, the shaded arrows in FIG4 indicate the flow direction of airflow in the bypass cavity 201. The specific structure of the fresh air module has been described above and will not be repeated here. The air conditioner equipped with the above-mentioned fresh air module can improve the airflow of the duct, avoid the surge phenomenon and noise generation of the impeller 120, and optimize the user experience.

[0083] In the above detailed description, reference has been made to the accompanying drawings, which illustrate specific aspects of this disclosure by way of illustration. In this regard, terms indicating direction or positional relationship, such as “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential,” are used with reference to the orientation of the described figures. Since components of the described device can be positioned in multiple different orientations, directional terms are used for illustrative purposes and not for limitation. It should be understood that other aspects can be utilized and structural or logical changes can be made without departing from the concept of this disclosure. Therefore, the following detailed description should not be considered limiting.

[0084] It should be understood that, unless otherwise specifically indicated, features of various embodiments of this disclosure described herein can be combined with each other. As used herein, the term “and / or” includes any one of the relevant listed items and any combination of any two or more; similarly, “at least one of…” includes any one of the relevant listed items and any combination of any two or more.

[0085] It should be understood that, unless otherwise expressly specified and limited, the terms "joining," "attaching," "installing," "connecting," "linking," "fixing," etc., used in the embodiments of this disclosure should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms herein based on the specific circumstances.

[0086] Furthermore, the term "above" as used herein with respect to components, elements, or material layers formed or located "above" a surface may be used to indicate that a component, element, or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements, or layers are arranged between the surface and the aforementioned component, element, or material layer. However, the term "above" as used with respect to components, elements, or material layers formed or located "above" a surface may also optionally have a specific meaning: that a component, element, or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, for example, in direct contact with the surface.

[0087] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0088] It should be understood that spatial relative terms, such as “above,” “upper,” “below,” and “lower,” are used herein to describe the relationship between one element and another shown in the figures. In addition to the orientation depicted in the figures, these spatial relative terms are also intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as “above” or “upper” relative to another element would be “below” or “lower” relative to that other element. Thus, depending on the spatial orientation of the device, the term “above” encompasses both above and below orientations. Devices may have other orientations (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0089] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0090] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0091] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0092] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A fresh air module, characterized in that, The device includes a fan assembly (100) and a housing (200); the housing (200) has an air inlet cavity (201) and a first air inlet (202) communicating with the air inlet cavity (201); the fan assembly (100) is connected to the housing (200), and the fan assembly (100) has a second air inlet (101) and an air outlet (102), the second air inlet (101) communicating with the air inlet cavity (201); the housing (200) and the fan assembly (100) form a bypass cavity (300), the bypass cavity (300) has a first return inlet (301) and a first return outlet (302); the first return inlet (301) communicating with the air outlet (102) and the first return outlet (302) communicating with the air inlet cavity (201).

2. The fresh air module according to claim 1, characterized in that, The fan assembly (100) includes a volute (110) and a fan wheel (120); the volute (110) is provided with an air outlet channel (103), the second air inlet (101) is provided in the volute (110), and the fan wheel (120) is provided inside the volute (110) to drive the fresh air flow of the air inlet chamber (201) into the volute (110) through the second air inlet (101) and out through the air outlet channel (103); the port of the air outlet channel (103) away from the fan wheel (120) forms the air outlet (102), and the first return inlet (301) is opened on the side wall of the air outlet channel (103).

3. The fresh air module according to claim 2, characterized in that, The housing (200) includes a first outer shell (210) and a second outer shell (220). The first outer shell (210) is connected to the volute (110), and the air inlet cavity (201) is disposed inside the first outer shell (210). The second outer shell (220) is connected to the first outer shell (210), and a portion of the second outer shell (220) extends toward the volute (110) to connect with the outer side wall of the volute (110). The second outer shell (220), the first outer shell (210), and the outer side wall of the volute (110) together form the bypass cavity (300). The first return outlet (302) is opened on the side wall of the first outer shell (210).

4. The fresh air module according to claim 2, characterized in that, It also includes a bypass pipe (400), one end of which is connected to the housing (200) and the other end of which is connected to the volute (110); the bypass pipe (400) has a second return inlet (401) and a second return outlet (402), the second return inlet (401) is connected to the air outlet channel (103) and the second return outlet (402) is connected to the air inlet cavity (201).

5. The fresh air module according to claim 4, characterized in that, The bypass pipe (400) penetrates the first inner wall (1031) of the air outlet channel (103), and the first return inlet (301) is opened on the second inner wall (1032) of the air outlet channel (103); there is an angle between the first inner wall (1031) and the second inner wall (1032); or, the first inner wall (1031) and the second inner wall (1032) are parallel.

6. The fresh air module according to claim 4, characterized in that, The number of bypass pipes (400) is set to multiple; and / or, the bypass pipes (400) are made of flexible material.

7. The fresh air module according to claim 4, characterized in that, The sum of the flow areas of the first return inlet (301) and the second return inlet (401) is set as A1, and the flow area of ​​the air outlet (102) is set as A2; wherein: A1 / A2≤0.

2.

8. The fresh air module according to claim 1, characterized in that, It also includes a support (500) and a filter (600); the support (500) is connected to the housing (200), and a support cavity (501) is provided in the support (500), the support cavity (501) is connected to the air inlet cavity (201), and the port of the support cavity (501) forms the first air inlet (202); the filter (600) is disposed in the support cavity (501).

9. The fresh air module according to claim 8, characterized in that, The housing (200) also has a disassembly port (203) communicating with the support cavity (501), and the filter element (600) passes through the disassembly port (203) to be inserted into the support cavity (501).

10. An air conditioner, characterized in that, It includes a device body (10) and a fresh air module as described in any one of claims 1 to 9; the device body (10) is connected to the fresh air module.

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